Lenovo ThinkCentre M81 TW Desktop PC CI3-2100 3.1Ghz, 8G DDR3, 1T HDD, VGA, DP, WiFi, Bluetooth, DVDRW, Mouse and Keyboard, Windows 10 Pro 64 Bit Used Grade A - Walmart.com
parts-quick 8GB DDR3 Memory for EliteGroup (ECS) - KBN-I/2100 Motherboard PC3-12800 1600MHz Non-ECC Desktop DIMM Compatible RAM Upgrade at Amazon.com
Arch Memory 8GB 240-Pin DDR3 1866 MHz ECC UDIMM RAM for HP Spectre XT Ultrabook 13t-2100 at Amazon.com
Refurbished: DELL Desktop Computer OptiPlex 990 Intel Core i3 2nd Gen 2100 (3.10GHz) 4GB DDR3 250GB HDD Windows 10 Pro - Newegg.com